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Background <p>Aflatoxin contamination in red pepper during post-harvest processes poses a severe threat to food safety.</p> Objectives <p>This study aims to develop a novel biological control strategy by investigating the efficacy of exopolysaccharide (EPS) film coatings combined with the antagonistic yeast <i>Williopsis saturnus </i>var.<i> saturnus</i> to reduce aflatoxin accumulation.</p> Methods <p>Red pepper samples were coated with EPS films, with and without <i>W. saturnus</i>, and stored under controlled conditions. Aflatoxin levels (aflatoxin B<sub>1</sub> (AFB<sub>1</sub>) and total aflatoxin (AF)) were quantified using a validated high-performance liquid chromatography (HPLC) method and modeled using the Gompertz model. Model parameters were evaluated using K-means clustering and Silhouette methods.</p> Results <p>The addition of <i>W. saturnus</i> to the EPS film significantly reduced the rate of aflatoxin accumulation, particularly under unfavorable (inoculated) storage conditions. This inhibitory effect on growth kinetics was statistically significant and consistent for both total AF and AFB<sub>1</sub>.</p> Conclusion <p>The combined application of EPS film and <i>W. saturnus</i> provides an effective biological barrier against aflatoxin accumulation.</p> Significance <p>This approach offers an eco-friendly and cost-effective alternative to chemical methods for mycotoxin control in red pepper and other valuable agricultural products.</p>

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Exopolysaccharide Film Coating and Antagonistic Yeast Combination for the Prevention of Aflatoxin Formation in Red Pepper

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年5月14日

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  • Zeliha Eraslan,
  • Mustafa Didin,
  • Selahaddin Batuhan Akben

摘要

Background

Aflatoxin contamination in red pepper during post-harvest processes poses a severe threat to food safety.

Objectives

This study aims to develop a novel biological control strategy by investigating the efficacy of exopolysaccharide (EPS) film coatings combined with the antagonistic yeast Williopsis saturnus var. saturnus to reduce aflatoxin accumulation.

Methods

Red pepper samples were coated with EPS films, with and without W. saturnus, and stored under controlled conditions. Aflatoxin levels (aflatoxin B1 (AFB1) and total aflatoxin (AF)) were quantified using a validated high-performance liquid chromatography (HPLC) method and modeled using the Gompertz model. Model parameters were evaluated using K-means clustering and Silhouette methods.

Results

The addition of W. saturnus to the EPS film significantly reduced the rate of aflatoxin accumulation, particularly under unfavorable (inoculated) storage conditions. This inhibitory effect on growth kinetics was statistically significant and consistent for both total AF and AFB1.

Conclusion

The combined application of EPS film and W. saturnus provides an effective biological barrier against aflatoxin accumulation.

Significance

This approach offers an eco-friendly and cost-effective alternative to chemical methods for mycotoxin control in red pepper and other valuable agricultural products.